Improvement in cardi ng-mach in es



UNITED STATES PATENT OEEICE.

JOSEPH DAVIS, OF EAST IVILTON, NEW HAMPSHIRE, ASSIGNOR TO HIMSELF, AND JESSE A. LOOKE, OF VATERTOWN, MASSACHUSETTS.

IMPROVIVIENT EN CARDING-MACHINES.

Specification forming part of Letters Patent No. 31,425, dated February 12, 1861.

To @ZZ whom t may concern/.j

Be it known that I, JOSEPH DAvIs, of East Wilton, of the county of Hillsborough and State of New Hampshire, have inventeda new and useful Improvement in the Garding-Machine; and I do hereby declare the said invention to be fully described in the following specification and illustrated in the accom panying drawings, of which- Figure l is a side elevation, and Fig. 2 a longitudinal section, of a carding-machine provided with my invention. Fig. 3 is a side View of one of its fluted rollers, to be hereinafter explained.

The nature of the said invention consists in an arrangement and application of fiuted rollers relatively to the main card-cylinder.

In the drawings, A is the main card-cylinder, having at its rear two smaller onesviz., the tumbler B and the lickerlin G-while at its front it is furnished with a doffer or doffingcylinder D. A series of workers IU w w and strippers S s sare arranged over its upper curved surface in the usual manner.

Extending underneath the lower half of the main card-cylinder is a series of rollers E E E, &c., which are disposed parallel to one another and quite near together, as represented. A series of smooth-surfaced rollers, in combination with and arranged under the main cardcylinder and its series of workers and strippers, constituted the subject of a cardingmachine improvement for which Letters Patent of the United States numbered 18,423, were granted to me on the 13th day of October, A. D. 1857.

Instead of constructing' each of the rollers which constitute, under the Inain card-cylinder, a rolling-grid,7 I now make it with a fiuted or channeled surface, the flutes being arranged longitudinally of the roller, or so as to extend from end to end of it. These flutes are represented at d d d in the drawings. Furthermore, I arrange between the main card-cylinder A and the tumbler B and also between the latter and the licker-in O an estopping bar or edge b or b', to which I conneet a trough c, to extend rearward under each roller. In constructing the same a single sheet of metal may be used, which may be bent in the form shown in section in the drawings and may also curve down a short distance along the curved surface of the main card-cylinder. 'The estoppingedge should extend as closely up into the bite of the cylinders as possible for them to run without contact with it, the object of such edge being to arrest or stop from falling from between the cylinders the loose bers of material to be carded and present them to the cylinder which is to receive them. The rear cylinder of either two 'next adjacent cylinders which may be working together7 I term the delivering-cylinder,7 while that in front of it may be said to be the receiving-cylinder, and this for the reason that one delivers the fibrous material to the other and the latter receives it from the former. The trough extending under the rearmost or delivering cylinder causes the loose fibers which may not be seized by the receiving-cylinder to pass down under the delivering-cylinder and to be again laid by it on the estopping-edge in such a manner as to be easily seized and drawn away by the receiving-cylinder- The curved surfaces of such rollers are to be provided in the usual manner with card clothing or teeth.

In respect to the application of flutes to the rollers under the main card-*cylinder operatin g with workers and strippers, as described, I would remark that I lay no claim to a fluted roller by itself. As ordinarily employed it does not perform the functions appertaining to its flutes when used under a main cardcylinder, as hereinbefore described.

In my application of the iiuted rollers to operate with the main card-cylinder each flute vconstitutes a channel over which the fibrous material which may belaid on it becomes so bridged or stretched as not only to leave below it a space for the reception of the dirt that may be discharged from such material, but so present the material to the teeth of the main cylinder as to enable them to more readily enter and seize it than would be the case were it brought to them by a smoothsurfaced roller. The dirt or extraneous matter by being' received into the channel or flute not only becomes so separated or isolated from the. main card-cylinder as to prevent the latter from seizing it, but is carried around subsequently by the rotation of the roller and discharged from it. Thus it will be seen that new and important results follow from I claim as an improvement thereontheabove-stated application of fiuted rollers The above-described application and arunderneath the main card-cylinder of a cardrangement of fluted rollers under the main ing-engine, experience having demonstrated card-cylinder and to operate therewith subsuch application to he one of great Value or stantially in manner as specified.

utility.

I do not herein claim the combination and JOSEPH DAVIS.

arrangement of smooth-surfaced rollers with the'main card-cylinder and its workers, or Vitnesses:

Workers and strippers, so as to operate there- WV. G. LEVI, l

with in manner and for the purpose as de- F. P. HALE, J r.

scribed in my Patent No.18,423. 

